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/*
* This file is part of LibEuFin.
* Copyright (C) 2023 Taler Systems S.A.
* LibEuFin is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation; either version 3, or
* (at your option) any later version.
* LibEuFin is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
* Public License for more details.
* You should have received a copy of the GNU Affero General Public
* License along with LibEuFin; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>
*/
package tech.libeufin.bank
import io.ktor.http.*
import tech.libeufin.common.TalerAmount
import tech.libeufin.common.TalerErrorCode
import java.time.OffsetDateTime
import java.time.ZoneOffset
import java.time.temporal.TemporalAdjusters
import java.util.UUID
fun Parameters.expect(name: String): String
= get(name) ?: throw badRequest("Missing '$name' parameter", TalerErrorCode.GENERIC_PARAMETER_MISSING)
fun Parameters.int(name: String): Int?
= get(name)?.run { toIntOrNull() ?: throw badRequest("Param '$name' not a number", TalerErrorCode.GENERIC_PARAMETER_MALFORMED) }
fun Parameters.expectInt(name: String): Int
= int(name) ?: throw badRequest("Missing '$name' number parameter", TalerErrorCode.GENERIC_PARAMETER_MISSING)
fun Parameters.long(name: String): Long?
= get(name)?.run { toLongOrNull() ?: throw badRequest("Param '$name' not a number", TalerErrorCode.GENERIC_PARAMETER_MALFORMED) }
fun Parameters.expectLong(name: String): Long
= long(name) ?: throw badRequest("Missing '$name' number parameter", TalerErrorCode.GENERIC_PARAMETER_MISSING)
fun Parameters.uuid(name: String): UUID? {
return get(name)?.run {
try {
UUID.fromString(this)
} catch (e: Exception) {
println("$this $e")
throw badRequest("Param '$name' not an UUID", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
}
}
}
fun Parameters.expectUuid(name: String): UUID
= uuid(name) ?: throw badRequest("Missing '$name' UUID parameter", TalerErrorCode.GENERIC_PARAMETER_MISSING)
fun Parameters.amount(name: String): TalerAmount?
= get(name)?.run {
try {
TalerAmount(this)
} catch (e: Exception) {
throw badRequest("Param '$name' not a taler amount", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
}
}
data class MonitorParams(
val timeframe: Timeframe,
val which: Int?
) {
companion object {
val names = Timeframe.entries.map { it.name }
val names_fmt = names.joinToString()
fun extract(params: Parameters): MonitorParams {
val raw = params.get("timeframe") ?: "hour"
if (!names.contains(raw)) {
throw badRequest("Param 'timeframe' must be one of $names_fmt", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
}
val timeframe = Timeframe.valueOf(raw)
val which = params.int("which")
if (which != null) {
val lastDayOfMonth = OffsetDateTime.now(ZoneOffset.UTC).with(TemporalAdjusters.lastDayOfMonth()).dayOfMonth
when {
timeframe == Timeframe.hour && (0 > which || which > 23) ->
throw badRequest("For hour timestamp param 'which' must be between 00 to 23", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
timeframe == Timeframe.day && (1 > which || which > lastDayOfMonth) ->
throw badRequest("For day timestamp param 'which' must be between 1 to $lastDayOfMonth", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
timeframe == Timeframe.month && (1 > which || which > 12) ->
throw badRequest("For month timestamp param 'which' must be between 1 to 12", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
timeframe == Timeframe.year && (1 > which|| which > 9999) ->
throw badRequest("For year timestamp param 'which' must be between 0001 to 9999", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
else -> {}
}
}
return MonitorParams(timeframe, which)
}
}
}
data class AccountParams(
val page: PageParams, val loginFilter: String
) {
companion object {
fun extract(params: Parameters): AccountParams {
val loginFilter = params.get("filter_name")?.run { "%$this%" } ?: "%"
return AccountParams(PageParams.extract(params), loginFilter)
}
}
}
data class PageParams(
val delta: Int, val start: Long
) {
companion object {
fun extract(params: Parameters): PageParams {
val delta: Int = params.int("delta") ?: -20
val start: Long = params.long("start") ?: if (delta >= 0) 0L else Long.MAX_VALUE
if (start < 0) throw badRequest("Param 'start' must be a positive number", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
// TODO enforce delta limit
return PageParams(delta, start)
}
}
}
data class PollingParams(
val poll_ms: Long
) {
companion object {
fun extract(params: Parameters): PollingParams {
val poll_ms: Long = params.long("long_poll_ms") ?: 0
if (poll_ms < 0) throw badRequest("Param 'long_poll_ms' must be a positive number", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
return PollingParams(poll_ms)
}
}
}
data class HistoryParams(
val page: PageParams, val polling: PollingParams
) {
companion object {
fun extract(params: Parameters): HistoryParams {
return HistoryParams(PageParams.extract(params), PollingParams.extract(params))
}
}
}
data class RateParams(
val debit: TalerAmount?, val credit: TalerAmount?
) {
companion object {
fun extract(params: Parameters): RateParams {
val debit = params.amount("amount_debit")
val credit = params.amount("amount_credit")
if (debit == null && credit == null) {
throw badRequest("Either param 'amount_debit' or 'amount_credit' is required", TalerErrorCode.GENERIC_PARAMETER_MISSING)
} else if (debit != null && credit != null) {
throw badRequest("Cannot have both 'amount_debit' and 'amount_credit' params", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
}
return RateParams(debit, credit)
}
}
}
data class StatusParams(
val polling: PollingParams,
val old_state: WithdrawalStatus
) {
companion object {
val names = WithdrawalStatus.entries.map { it.name }
val names_fmt = names.joinToString()
fun extract(params: Parameters): StatusParams {
val old_state = params.get("old_state") ?: "pending"
if (!names.contains(old_state)) {
throw badRequest("Param 'old_state' must be one of $names_fmt", TalerErrorCode.GENERIC_PARAMETER_MALFORMED)
}
return StatusParams(
polling = PollingParams.extract(params),
old_state = WithdrawalStatus.valueOf(old_state)
)
}
}
}
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